Issued Patents 2018
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10154144 | Adjustable interactive voice response system and methods of using same | John Ragsdale | 2018-12-11 |
| 9894210 | Adjustable dual-tone multi-frequency phone system | — | 2018-02-13 |